BasicStudents matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.

At Grade (Proficient)Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.

AdvancedStudents matched to this level are ready for material that requires superior performance and mastery.

On top of mountains in Yosemite National Park, where there appears to be nothing but rocks, is a surprisingly diverse community of plants. Living in harsh conditions of frigid temperatures and high winds, these plants will be run off the top of the mountain as temperatures rise.

On top of mountains in Yosemite National Park, where there appears to be nothing but rocks, is a surprisingly diverse community of plants. Living in harsh conditions of frigid temperatures and high winds, these plants will be run off the top of the mountain as temperatures rise.